Bell.



L. E. RICHMOND.

BELL.

APPLICATION FILED AUG-28, 1915.

1 ,258,81 3. Patented Mar. 12, 1918.

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Azzic UNITED STATES PATENT OFFICE.

LOUIS E. RICHMOND, 0F CLEVELAND, OHIO, ASSIGNOR TO THE MEAD ELECTRIC SIGNAL COMPANY, OF CLEVELAND, 01-110, A CORPORATION OF OHIO.

BELL.

Application filed August 28,1915.

To all whom it may concern:

Be it known that I, LoUIs a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Bells, of which the following is a specification.

This invent-ion relates generally to bells, and particularly to those operated by electric means.

More specifically the invention relates to electrical bell sounding mechanism comprising a casing, a magnet structure of U-shape made up of laininations and having on one leg of the U a coil, and on the other leg an armature pivotally mounted and cooperating with the leg surrounded by the coil, together with a lever having a clapper mounted thereon and adapted to be actuated by the armature, the movement of the armature being limited by a slide movably mounted upon a strip extending along the back of the armature.

The invention also relates to other details hereinafter set forth in the following description, drawings and claims.

Referring to the drawings, Figure 1 is a view in elevation with the casing removed; Fig. 2 is a bottom plan with a portion of the insulating block broken away; Fig. 3 is a vertical sectional view through the mechanism; and Fig. 4 is a transverse section passing through the center of the coil.

In carrying out the invention I employ a base 1 provided with a pin 2 on which a suitable gong 3 is mounted. Secured to the base 1 beyond the bell is a suitable clapper operating lever bracket 4 and a flat strip arranged in a wicket-like structure. Passing through the sides of this bracket is a suitable pivot pin 5 preferably of the cotter pin type having pivoted upon it a lever hanger 6 having a lever 7 secured thereto. One end of this lever carries a suitable clapper 8 while the other end projects downward and is engaged by mechanism to be described. The magnet and armature structure comprises a U-shaped frame consisting of U-shaped laminations 9 arranged to be secured against the base, as shown, and having extending arms 10 and 11, the former being surrounded by a suitable coil 12 engaging an insulating washer 13 arranged upon the leg of the U made up of the laminations. This coil is held in place by a Specification of Letters Patent.

E. RICHMOND,

Patented Mar. 12, 1918.

Serial No. 47,862.

retaining pin 1% passing through the ends of the laminations and engaging insulating pieces 15 arranged upon the top of the coil. A suitable brass cap 16 is arranged upon the ends of the portions 10 for a purpose to be described. Secured to the sides of the end laminations of the U formed by the portions 11 is a wicket-shaped bracket 17, the sides of which receive a cotter pin 18 upon which is pivoted a laminated armature 18 adapted to be drawn into engagement with the brass cap 16.

Secured at the outer end of the wicketshaped brackets 4; and 17 is a strip 19 extending in parallel alinement with the ends of the legs of the U-shaped magnet structure, and upon this strip 19 is an adjusting clip comprising a plate 20 having a loop 21 bent up therefrom and passing around the outside of the strip and serving to hold and guide the clip in its movement along the strip 19. The lower edge is provided with an inwardly extending flange 22 adapted to engage the outer face of the armature 18. By moving this clip upward upon the strip 19, as shown in Fig. 3, the gap between the armature and the magnetis reduced in an obvious manner. Secured to the upper end of the armature is a bail 23 having its edge extending to a point where it will engage the end of the lever 7. The coil is provided with suitable leads or conductors 2 1 and 25 which pass through an insulating strip 26 at the bottom of magnet frame and into an insulating block 27. This block is provided with a central opening 28. The entire operating mechanism oi the bell is inclosed in an outer box-like cover 29 having an opening 30 for the clapper 8, and suitable openings in the opposite end of the insulating block 27. The body of the cover at the opening for the insulating block 27 is provided with a downwardly extending lug 31 adapted for engagement in the opening 28, so that when the cover is in place, the insulating block 27 is held against movement. Suitable openings 32 and 33 formed in the cover and the base serve as a means for securing the several parts in any suitable support, other openings being also provided for this purpose.

Having described my invention, I claim 1. A bell structure comprising a base, a gong mounted thereon, and electrical operating mechanism including a laminated U- shaped magnet frame, a coil arranged upon one of the legs of the U, a laminated armature pivotally connected to the other leg of the U and adapted to bridge the two legs, a clapper lever adapted to be actuated by the armature, a clapper carried by said lever,

andmeans for, adjusting the ga) between the armature and the magnet rame and comprising a guide strip and a clip slidably mounted upon said guide strip adapted to engage the armature.

2. A bell structure comprising a base, a gong mounted thereon, and electrical operating mechanism including a laminated U- shaped magnet frame, a coil arranged upon one of the legs of the U, a laminated armature pivotally connected to the other leg of the U and adapted to bridge the two legs, a clapper lever adapted to be actuated by the armature, a clapper carried by said lever, and means for adjusting the gap between the armature and the magnet frame and comprising a guide strip and a spring clip slidably mounted upon said guide strip and adapted to engage back of the armature and vary the gap.

3. A bell comprising a base, a gong mounted on said base, a wicket-shaped elapper bracket secured to the base, a clapper lever pivoted in said bracket, a clapper carried by said lever, a magnet frame secured to the base comprising a plurality of U- shaped laminations secured together, a magnet arranged upon one leg of the U, a brass cap extending over the ends of laminations of one leg, a coil surrounding this same leg, a wicket-shaped bracket. secured to the other leg,an armature pivotally mounted in said last mentioned U-shaped bracket and extending from one leg of the U to the other, a strip extending from one bracket to the other, and movable armature adjusting means carried by said strip.

4. A bell comprising a base, a gong mounted on said base, a wicket-shaped clapper bracket secured to the base, a clapper lever pivoted in said bracket, a clapper carried by said lever, a magnet frame secured to the base comprisingaplurality of U-shaped laminations secured together, a magnet arranged upon one leg of the U, a brass cap extending over the ends of laminations of one leg, a coil surrounding this same leg, a wicket-shaped bracket secured to the other leg, an armature pivotally mounted in said last mentioned U-shaped bracket and extending from one leg to the U to the other, a strip extending from one bracket to the other, and an armature adjusting slide carried by said strip.

5. In an electric bell, a base, a gong mounted upon the base, bell sounding mechanism comprising a magnet and a clapper actuated thereby, a connector block receiving the leads from the magnet and having an opening therein, and a casing provided with a lug engaging the opening in said block and holding it in place.

6. In a device of the character described, a vertical base plate, a gong mounted upon and in front of the upper portion of the base plate, a Striker mounted on the base plate below the gong so as to swing in a vertical plane at right angles to the plane of the base plate toward and from the gong, an electro-magnet mounted on the base plate below the striker, a swinging armature arm extending upwardly in front of the electromagnet and adapted to be attracted by the electro-magnet, and cooperating parts on the upper end of the arm and on the striker adapted to engage with each other when the electro-magnet is energized and drive the striker toward the gong.

7. In a device of the character described, a base plate, a gong lying in front of and secured to one end of the base plate, postsprojeeting forwardly from the base plate below the gong, a striker pivotally supported by said posts, an electro-magnet lying beneath said posts and rigidly connected to the base plate, a third post projecting forwardly from the base plate beneath the electromagnet, an armature arm hinged to the latter post and projecting upwardly in front of the electro-magnet into the vicinity of the.

striker, and cooperating parts on the arm and on the striker engaging with each other but having no connection with each other and adapted to cause the striker to be driven toward the gong when the eleetro-magnet is energized.

8. Inadevice of the character described,

a base plate, a gong mounted upon one end of and in front of the base plate, a post projecting forwardly from the base plate below the gong, a striker hinged to the outer end of said post and having at its inner end a head adapted to engage with the gong, an

electro-magnct fixed to the base plate below said post, a second post projecting forwardly from the base plate beneath the electro-magnet, an armature arm hinged at its lower end to said second post and projecting upwardly in front of the electromagnet to the striker, an adjustable stop be-, tween said arm and the post on which the arm is mounted, the stop being adapted to limit the movement of said arm in the outbase plate below the gong so as to be freely 130,- i

movable in a vertical plane at right angles to the plane of the base plate from and toward the gong, an electro-magnet secured to the base plate below the striker with the core thereof extending forwardly at right angles to the base plate, an armature movably supported in front of the electro-magnet, and a part associated with said armature having no connection with the striker but simply contacting therewith for throw- 19 ing the striker upwardly against the action of gravity in order to engage the gong.

In testimony whereof I aflix my signature in presence of two witnesses as follows:

LOUIS E. RICHMOND. WVitnesses:

G. O. FAR UHARsoN, D. TOSER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

